A periodogram-based method for the detection of steady-state visually evoked potentials.
The task of objective perimetry is to scan the visual field and find an answer about the function of the visual system. Flicker-burst stimulation--a physiological sensible combination of transient and steady-state stimulation--is used to generate deterministic sinusoidal responses or visually evoked potentials (VEP's) at the visual cortex, which are derived from the electroencephalogram by a suitable electrode array. In this paper we develop a new method for the detection of VEP's. Based on the periodogram of a time-series, we test the data for the presence of hidden periodic components, which correspond to steady-state VEP's. The method is applied successfully to real data.
Liavas
A P
AP
Départment SIM, Institut National des Télécommunications, Evry, France. liavas@pollux.int-evry.fr
Moustakides
G V
GV
Henning
G
G
Psarakis
E Z
EZ
Husar
P
P
D004569:Electroencephalography; D005074:Evoked Potentials, Visual; D008959:Models, Neurological; D015233:Models, Statistical; D010507:Periodicity; D011336:Probability; D012815:Signal Processing, Computer-Assisted